BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,560.00
$900.75
BEST BEST 45H Series (G - Communicating Function) - Escutcheon Trim Heavy Duty Mortise Lock, Double Keyed BES-45H-G-ES

BEST 45H Series Heavy Duty Mortise Lock with Communicating Function and Escutcheon Trim

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Model: 45H7G3J626
$1,560.00
$900.75
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,560.00
$900.75
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BEST 45H Series Heavy Duty Mortise Lock with Communicating Function and Escutcheon Trim

Professional Grade Mortise Lock with Enhanced Security Features

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with communicating function capability and escutcheon trim design. This double keyed mortise lock features a 2-3/4" backset, solid stainless steel construction, and meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards. The lock accommodates standard 1-3/4" thick doors with optional thick door configurations available up to 5" thickness.

Professional Features & Benefits

  • Heavy-Duty Construction: 0.095" cold rolled steel case, cover, and armored front with zinc dichromate plating for superior corrosion protection and durability.
  • Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.
  • Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening case, plus four position hub toggle for flexible configuration.
  • Roller Bearing Mechanism: Smooth, wear-resistant operation with lever return spring mechanism located in trim for enhanced protection against lever droop.
  • Security Features: Solid machined cylinder rings with wavy washer provides resistance to wrenching, plus cylinder security screw prevents removal without first removing interchangeable core.
  • Self-Aligning Installation: Armored front self-aligns with door bevel during installation, and trim mechanism provides fast, easy, and accurate installation.
  • Visual Indicators: Clear indication of locked and unlocked states with optional padlock icon indicators showing open for unlocked and closed red for locked.
  • Antimicrobial Options: Available with UltraShield antimicrobial protected coating in 626AM satin chrome and 630AM satin stainless steel finishes for healthcare and high-cleanliness applications.

Technical Specifications

45H Series –The design and operation of the BEST® mortise lock meets the intent
of the standard for ANSI A117.1 section 404.2.6.
Builders Hardware Manufacturers Association:
45H Series –ANSI A156.13, Series 1000, Grade 1 Operation and Strength, Grade 2 Security. To meet Grade 1 Security, a drill resistant core
(1CD, 1CDP, 1CDF, or 1CDX) must be used with escutcheon trims, and 1EK7K4 high security cylinder must be used with sectional trims.
47H Series – ANSI A156.13, Series 1000, Grade 1 Operational, Strength, and Security

Auxiliary bolt – Stainless steel, non-handed.
Backset – 2-3/4"
Case –0.095” cold rolled steel, 5- 7/8" H x 7/8" D x 4-1/16" W. Steel is zinc dichromate plated for corrosion protection.
Deadbolt – Stainless steel, 1" throw.
Latchbolt –Solid stainless steel, 3/4" throw. Latch is oil-impregnated for anti-friction operation. Reversible without opening case.
Strike – For complete strike package spec’s see page 5.
Door Thickness – Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to
5" thick (specify thickness when ordering).
Faceplate –Stainless steel, brass or bronze material, 8" H x 1-1/4" W x 1/16" T. Lock face automatically adjusts to proper bevel during
installation.
Products protected by one or more of the following patents: 4,873,853 5,590,555 5,794,472
Finishes –
• 605 - bright brass, clear coated
• 606 – satin brass, clear coated
• 611 – bright bronze, clear coated
• 612 – satin bronze, clear coated
• 613* – oxidized satin bronze, oil rubbed
• 618 – bright nickel plated, clear coated (brass base material)
• 619 – satin nickel plated, clear coated (brass base material)
• 622 – flat black coated (brass base material) 625 – brightchromium plated (brass base material)
• 626 – satin chromium plated (brass base material)
• 629 – bright stainless steel
• 630 – satin stainless steel
• 690* – dark bronze coated (brass base material)
*613 finish is designed to wear over time, providing an “antique” appearance.
*690 finish will continue as a dark brown appearance over time.
Antimicrobial Finish –
• 626AM – satin chrome plated with UltraShield™ antimicrobial protected coating
• 630AM – satin stainless steel with UltraShield™ antimicrobial protected coating
The BEST UltraShield finish inhibits the growth of bacteria and other microbes on the surface of the hardware.
NOTE: BEST UltraShieldTM option is recommended for use on any hardware application where product cleanliness is a high priority. i.e;.
Hospital/Healthcare, Elderly Care, Education, Transportation, Food-Service, Hospitality.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or up to 5" for thick door configuration), mortise pocket dimensions, and handing requirements.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 8" H x 1-1/4" W faceplate.
  3. Prepare door mortise pocket and frame strike pocket according to specifications, ensuring proper clearance for the 1" deadbolt throw and 3/4" latchbolt throw.
  4. Install the mortise lock case into the door pocket and secure with appropriate fasteners, allowing the armored front to self-align with door bevel during installation.
  5. Configure the four position hub toggle to determine locked/unlocked operation for each hub based on application requirements and install escutcheon trim with self-aligning mechanism.
  6. Test lock operation including latchbolt and deadbolt function, key operation from both sides, and verify proper alignment with strike assembly. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • High-Security Commercial Applications

Antimicrobial Protection Option

The BEST UltraShield antimicrobial finish option inhibits the growth of bacteria and other microbes on the hardware surface. Available in 626AM satin chrome and 630AM satin stainless steel finishes, this option is recommended for healthcare facilities, elderly care, education, transportation, food service, and hospitality applications where product cleanliness is a high priority.

Why Choose BEST Quality?

BEST 45H Series mortise locks deliver professional-grade reliability with 0.095" cold rolled steel construction and solid stainless steel components engineered for demanding commercial applications. Meeting ANSI A156.13 Series 1000 Grade 1 standards for operation and strength, these locks provide the dependable performance and enhanced security features essential for high-traffic commercial environments where reliable access control is critical.

Product Specs

Series:
45H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Double Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Product Attribute:
Mortise Locks
Electronic:
No
Face Plate:
8" H x 1-1/4" W x 1/16" T
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

BEST 45H7G3J626 – Frequently Asked Questions

1) What does the communicating function on a BEST 45H mortise lock actually do?
Communicating is the double-keyed function used on a door between two spaces that both need control, like adjoining hotel rooms, connected offices, or paired patient rooms. Both sides take a cylinder, so the door is keyed from each side and neither side is a free-egress lever unless you set it that way. The 45H uses a four position hub toggle, so you configure locked or unlocked operation per hub at install rather than ordering a different case. If you need a door where the inside always retracts the latch freely, communicating is the wrong function and a storeroom or office function is what you want.
2) Will the BEST 45H mortise lock fit a door thicker than 1-3/4 inches?
Standard configuration of the 45H case is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, up to 5 inches, BEST builds a thick door configuration, but you have to state the actual door thickness on the order. It is not a field adjustment you make out of the box, so measure the leaf before you order.
3) Will the BEST 45H latch into the strike I already have in the frame?
The latchbolt throws 3/4 inch and the deadbolt throws 1 inch, both solid stainless. A standard ANSI mortise strike with a deep enough box will take both. What decides it is the deadbolt: a strike cut only for a latch has no pocket for a 1 inch bolt, so if the door previously carried a latch-only mortise lock, plan on a new strike and frame prep.
4) Do I have to specify handing when ordering a BEST 45H mortise lock?
No. The 45H case is non-handed. The latch is reversible and rotates 180 degrees without opening the case, and the auxiliary bolt is non-handed too, so one lock covers left and right hand openings. That is worth knowing if you stock spares for a building: one case number sits on the shelf for every door.
5) Does the BEST 45H come with cylinders or cores?
It ships prepped for a small format interchangeable core, less core. Both sides need a core on the communicating function, so budget two SFIC cores in your keyway on top of the lock. The cylinder security screw means the core has to come out before anyone can pull the cylinder, and solid machined cylinder rings with a wavy washer resist wrenching.
6) What ANSI grade is the BEST 45H mortise lock, and how do I get it to Grade 1 security?
45H meets ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, and Grade 2 for Security as built. To reach Grade 1 Security with escutcheon trim, BEST requires a drill resistant core, one of the 1CD, 1CDP, 1CDF or 1CDX. On sectional trim the requirement is the 1EK7K4 high security cylinder instead. If your spec sheet says Grade 1 security across the board, the core is the line item that gets you there.
7) What is the closest Grade 1 mortise lock to a BEST 45H if the opening needs a storeroom function instead of communicating?
The BEST 45H is a heavy duty mortise lock with a double cylinder keyed function and a 2-3/4 inch backset. An opening that needs storeroom function instead is served by the Accentra 8805FL, a Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever, or the Cal-Royal NM8080, a Grade 1 storeroom mortise lockset with an interchangeable core option for doors 1-3/4 inch thick. The Cal-Royal NM8080 is the nearer match for a keying program built on interchangeable cores, since the BEST 45H ships with an SFIC prep less core.
8) What is a simpler mortise lock than a BEST 45H for a door that does not need to be keyed?
The BEST 45H is keyed with a double cylinder function. On an opening that needs no key at all, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors. For a non-keyed opening that still needs escutcheon trim to match a 45H run, the Hager 3810E in the 3800 Series is a Grade 1 passage mortise lock with escutcheon and a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch thick, which matches the 45H backset of 2-3/4 inch.
9) What mortise lock replaces a BEST 45H when the door needs credential access instead of a key?
The BEST 45H is a mechanical, non-electronic mortise lock. Where the opening needs electronic credentials, the TownSteel FME-2000 Series is a Grade 1 heavy duty mortise lockset with RFID technology in classroom function for 1-3/4 inch doors, the Dormakaba E-Plex E5086 is a Grade 1 back to back pushbutton and card entry/egress mortise lock, and the Accentra nexTouch NTM623-NR is a Grade 1 mortise lock with a capacitive touchscreen keypad, no deadbolt, with cylinder override. The nexTouch keeps a mechanical key override, which is the closest behavior to the keyed operation of the 45H.
10) Can I use a BEST 45H mortise lock on a 2-1/2 inch backset door prepped for a Baldwin 6301?
No, those are different preps. The BEST 45H uses a 2-3/4 inch backset. The Baldwin 6301 entry/apartment mortise lock body is a 2-1/2 inch backset part, offered knob by knob and, as the 6301LS, lever by lever, for doors 1-3/4 inch and over. A door mortised for the 2-1/2 inch Baldwin body will not take the 45H case without rework, so match the replacement to the existing 2-1/2 inch prep or re-prep the door.
11) Which mortise lock should I specify for a behavioral health or patient room instead of a BEST 45H with escutcheon trim?
The BEST 45H uses escutcheon trim with lever styles including gull wing, curved with return, and contour with angle return, all of which present a projecting lever. Where ligature resistance governs, the TownSteel MRX-A-01 is a Grade 1 heavy duty passage mortise lockset with ligature resistant arch trim in satin stainless steel, and the MRX-L-01 is the Grade 1 heavy duty anti-ligature lever version, both for 1-3/4 inch doors. For a push/pull patient room opening, the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset in the 195 Series, ligature resistant and ADA compliant in satin stainless steel. Note that all three are passage function rather than keyed.
12) What mortise lock do I use if the opening needs the outside lever to release on an access control signal?
The BEST 45H is a mechanical lock with no electrical function. For an electrified mortise opening, the Schlage L9092EU is a heavy duty corridor mortise lock with an electric lock/unlock outside lever, keyed outside, request to exit, on 12/24VDC for 1-3/4 inch doors, and the Command Access ML190 Series is a heavy duty storeroom motorized mortise lock with field selectable EL or EU operation on 24VDC. The Command Access ML190 lets the fail secure or fail safe decision be made in the field rather than at order time.
13) Which escutcheon trim style should I pick on the BEST 45H?
Three trim choices. J is a wrought escutcheon, M is forged, and N is forged with a concealed cylinder for openings where you do not want the core visible on the plate. Lever choice is separate: solid tube with or without return, round knob, contour with angle return, curved with or without return, and gull wing. The lever return spring lives in the trim rather than the case, which is what keeps levers from drooping on high traffic doors.
14) Is there an antimicrobial version of the BEST 45H for a hospital or care facility?
Two finishes carry the UltraShield antimicrobial coating: 626AM satin chrome and 630AM satin stainless steel. BEST calls it out for hospital and elderly care, education, transportation, food service and hospitality, anywhere surface cleanliness is part of the spec. Standard 626 and 630 are the same finishes without the coating if the facility does not require it.
15) Is the BEST 45H an electronic or access control lock?
No, the 45H is a purely mechanical keyed mortise lock. No wiring, no power supply, no credential reader. If the project calls for card or mobile credentials on a mortise prep, the Schlage LEMD-GRW ENGAGE wireless mortise lock with a 125kHz proximity reader or the TownSteel FME-2000 Grade 1 RFID mortise lockset are the electronic routes. For an electrified version of a conventional mortise lock on a 1-3/4 inch door, the Schlage L9092EU with request to exit runs on 12/24VDC.
16) I need a Grade 1 mortise lock but not a communicating function. What else is there?
Function is the thing to get right, and the 45H communicating is a narrow one. For a classroom door, the Corbin Russwin ML2003 is Grade 1 classroom on 1-3/4 inch doors, as is the Cal-Royal NM8070. Storeroom is the Accentra 8805FL or the Cal-Royal NM8080, which also takes an interchangeable core. Office and entrance is the Cal-Royal NM8050 with an auxiliary deadlatch, and privacy with a deadbolt is the NM8440. All of those Cal-Royal bodies are listed for 1-3/4 inch doors.
17) Does the BEST 45H meet accessibility requirements for lever operation?
BEST states the design and operation of the mortise lock meets the intent of ANSI A117.1 section 404.2.6, the clause covering door hardware operation. Choose a lever rather than the 4 round knob if accessible operation is part of your spec, since a knob requires tight grasping and turning.
18) What is the difference between the BEST 45H and the 47H series?
Security grading. The 45H carries ANSI A156.13 Series 1000 Grade 1 for Operation and Strength with Grade 2 Security, and gets to Grade 1 Security only with a drill resistant core or high security cylinder. The 47H is rated Grade 1 for Operational, Strength and Security as it comes. If the spec on your drawing reads Grade 1 security with no qualifier, the 47H answers it without a core upgrade.
19) Is a Sargent 4874 mortise deadbolt a substitute for a BEST 45H communicating mortise lock?
No. The Sargent 4874 is a double cylinder mortise deadbolt in the 4870 Series with a 2-3/4 inch backset, so it shares the backset and the double cylinder keying but provides a deadbolt only, with no latching or lever operation. The BEST 45H is a mortise lock with lever or knob trim, sold in escutcheon trim styles that include wrought, forged, and forged concealed cylinder. If the opening needs latching and levers, the 4874 does not replace it; if the opening only needs a keyed bolt, the 4874 is the simpler part. The Kaba Ilco 185 Series mortise lock is another deadbolt function part, supplied with no handing.
20) Is a Schlage L0170 dummy trim an alternative to a BEST 45H mortise lock?
No. The Schlage L0170 is a half dummy trim, a Grade 1 non-keyed mortise lever lock in the L Series for 1-3/4 inch doors in dummy function, so it is a fixed pull with no latch and no key. The BEST 45H is keyed with a double cylinder function and a working latchbolt. The Falcon MESC600DT is likewise a dummy escutcheon lever trim, made for M9900 Series exit devices, not a lock case. Use a dummy only on an inactive leaf, and keep the 45H where the leaf has to latch and lock.
21) What mortise lock works on a bathroom or bedroom door where a double keyed lock is not wanted?
A double cylinder keyed lock like the BEST 45H requires a key from both sides, which is not what a bath or bedroom opening calls for. The Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S in the 3800 Series is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 inch to 2 inch thick, matching the 2-3/4 inch backset of the 45H so an existing prep carries over.
22) What is the difference between a BEST 45H mortise lock and a Marks USA 21AC ornamental iron mortise lock?
Both are keyed on both sides, but they suit different doors. The Marks USA 21AC is an entrance double cylinder Unilock ornamental iron mortise lock with a round knob, built for 1 inch thick doors, as is the Marks USA 22AC in the 22 Series. The BEST 45H is a heavy duty commercial lock for doors 1-3/4 inch thick with thick door configurations available up to 5 inch. On a narrow ornamental iron gate or security door the 45H case will not fit the stile; on a standard commercial door the ornamental iron parts are the wrong thickness.
23) What mortise lock covers a dormitory or corridor opening where occupants lock the door behind them?
The BEST 45H is a communicating function lock, keyed double cylinder, made for passage between two controlled spaces. A dormitory opening is a different function: the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. Note the 7925 carries rose trim rather than the escutcheon trim used on the 45H, so the door face preparation and appearance differ.
24) Which mortise lock should I standardize on for healthcare where a BEST 45H antimicrobial finish is not enough?
The BEST 45H offers UltraShield antimicrobial finishes in 626AM satin chrome and 630AM satin stainless steel, which addresses surface cleanliness while keeping mechanical keyed operation. Where the facility also wants credential control on those doors, the TownSteel FME-4000 Series is a Grade 1 heavy duty electronic intruder classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the Dormakaba Saffire LX-I-M002 is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2. The 45H stays the choice where the door must operate with no power and no credential system behind it.
25) Will an Alarm Lock Trilogy mortise lock fit the same door as a BEST 45H?
Check the door thickness before assuming it will. The Alarm Lock DL2700CR and DL3500CR Trilogy electronic mortise locks are Grade 1 classroom function units rated for doors 1-5/8 inch to 1-7/8 inch thick, and the DL4500 electronic mortise deadbolt covers the same 1-5/8 inch to 1-7/8 inch range. The BEST 45H is built for 1-3/4 inch doors in its standard configuration with thick door configurations available up to 5 inch. A 1-3/4 inch door suits either, but a thick door running the 45H thick door configuration is outside the Trilogy range.
26) What is the closest mortise lock to a BEST 45H for an office or entrance door that only needs one key side?
The BEST 45H is double cylinder, keyed from both sides. Where only one side needs a key, the Cal-Royal NM8050 is a Grade 1 heavy duty office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Baldwin 6310 entry/storeroom mortise lock body covers entrance and storeroom function on a 2-1/2 inch backset for doors 1-3/8 inch and over, with the 6310190RRLS as the right hand reverse lever by lever version. The Cal-Royal keeps the 1-3/4 inch commercial door prep; the Baldwin uses the narrower 2-1/2 inch backset.
27) What finishes does the BEST 45H mortise lock come in to match the rest of my building?
Fourteen finishes, covering brass, bronze, nickel, chrome, black and stainless: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil rubbed satin bronze, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM antimicrobial satin chrome, 629 bright stainless, 630 satin stainless, 630AM antimicrobial satin stainless, and 690 statuary dark bronze. Two of those change over time by design: 613 is meant to wear to an antique look, and 690 stays a dark brown. If you are matching existing hardware on other doors, 626 and 630 are the commercial defaults.
28) Is the BEST 45H heavy duty enough for a high traffic commercial door?
It is built as commercial heavy duty. The case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion resistance, the latch is one piece solid stainless with roughly 50 percent more contact surface against the strike, and the mechanism runs on roller bearings. That is a different class of hardware from a residential mortise body like the Marks USA 21AC ornamental iron lock, which is built for 1 inch doors.
29) Does a BEST 45H mortise lock show whether the door is locked?
Yes. The lock gives clear indication of locked and unlocked state, and there is an optional padlock icon indicator, open for unlocked and a closed red icon for locked. Handy on communicating doors between suites where staff need to read status from the corridor without trying the lever. If you need a full classroom security indicator lockset instead, the Marks USA LA318GJ is that, Grade 1, for 1-3/4 inch doors with an ANSI strike.
How fast can I get the BEST 45H7G3J626 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST 45H7G3J626 come with a warranty?
Absolutely. The BEST 45H7G3J626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST 45H7G3J626?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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